OBERHEIM SYNTH group photo

Yahoo Groups archive

OBERHEIM SYNTH

Index last updated: 2026-04-28 23:39 UTC

Message

Re: Matrix-1000: one voice faulty, replace chip?

2013-04-21 by hawkberg

OK, thanks, it doesnt seem prohibitively expensive....if it works? 

do you happen to know if there is some mode than can be set when programming a patch that would mask my bad voice somehow? by disabling a voice...so I ewnd up with a "Matrix-5" :-)

any idea what would happen if i try playing without the chip of the faulty voice; could it be that the OS would actually detect that a voice chip is missing and not use that voice? (unlikely, but not unthinkable :-)



--- In oberheim@yahoogroups.com, Guy Taylor <geekon@...> wrote:
>
> Hi there,
> This is the editor i've had the most luck with:
> http://www.truefictions.net/technomusic.de/ob6000/
> Sadly, you have to pay ;)
> Its not the pc or the card that overwhelms the matrix (as midi is a fixed
> speed) it is the poor matrix itself,
> It wasn't really designed for real time editing and , i believe it's
> buffers overrun, hence the horrid noises during
> Sysex editing...
> Guy
> 
> ____________________________________
> 
> 
> On 21/04/2013, at 8:23 PM, hawkberg <sfcls@...> wrote:
> 
> 
> 
> Thanks again, I will have a go at it tonight.
> 
> Yes, spot on, I am Norwegian... :-) and judging from your "ö" I wouldnt
> think you are too far away from here?
> 
> BTW: any tips for an Editor program that would work on newer PCs? I
> understand that newer PCs/midi cards tend to overwhelm the processor of the
> Matrix-1k?
> 
> br
> Håkon
> 
> --- In oberheim@yahoogroups.com, Peter Mörck <peter@> wrote:
> >
> > I believe they're mounted in order 1-6 from left to right with the front
> panel towards you, but I think it's printed on the PCB as well.
> >
> > The Matrix-1000 is easy to open. I think it's just 2-3 screws on each
> side and then the top comes off easily.
> >
> > If you're buying a replacement 3396, please be aware that there are wide
> (600 mil) 3396:es also, which are used in the Matrix-6. They're usually
> called 3396W or WB or something like that.
> > The Matrix-1000 (as you will see) uses narrow (300 mil) ones.
> >
> > Also, be careful if removing the chips so you don't bend/break the pins.
> Either use an IC-extractor or a flat screwdriver and pry a bit on each end
> several times. Don't just bend it up completely on one side first, but take
> it bit by bit so it comes out "vertically" and not as if it's on hinges :)
> >
> > CEM3396 chips are obsolete but you can usually find them on specialized
> sites or ebay.
> > Judging by your name I would guess you're in Scandinavia :) So...
> European shops maybe...
> >
> > http://www.vintageplanet.nl/ seems to have the wide ones but not the
> narrow ones, so don't buy one of those.
> >
> > BR,
> > Peter
> >
> >
> > ----- Original Message -----
> > From: hawkberg
> > To: oberheim@yahoogroups.com
> > Sent: Sunday, April 21, 2013 11:19 AM
> > Subject: [oberheim] Re: Matrix-1000: one voice faulty, replace chip?
> >
> >
> >
> > Thanks, good suggestion.
> >
> > I have to admit I havent dared to open it yet, I tend to start with the
> wrong screws and things fall aport :-)
> >
> > Will I easily be able to identify which chip is which? And there is no
> soldering, only click-in or whatever the term is?
> >
> > If it proves to be that chip, are CEM 3396 chip still available?
> >
> > regards
> > Håkon
> >
> > --- In oberheim@yahoogroups.com, Peter Mörck <peter@> wrote:
> > >
> > > Before you replace:
> > > Try to swap the chip for voice 2 with that of another one and see if
> the problem moves as well.
> > > Sometimes just pressing down on the chips to reseat them in the sockets
> is enough.
> > > Removing them or putting them back might help as well.
> > > Just don't cuddle with your cat on a nylon carpet before you go in
> there...
> > >
> > > BR,
> > > Peter
> > >
> > >
> > > ----- Original Message -----
> > > From: hawkberg
> > > To: oberheim@...m
> > > Sent: Saturday, April 20, 2013 12:28 PM
> > > Subject: [oberheim] Matrix-1000: one voice faulty, replace chip?
> > >
> > >
> > >
> > > Hi
> > >
> > > I recently bought a Matrix-1000, which the seller claimed was in
> perfect condition. When it arrived, I quickly discovered this was not so :-(
> > >
> > > One of the voices (or one of the oscillators of one of the voices ) is
> not functioning properly, the symptoms vary a lot from one patch to
> another.... from being completely silent to having a wrong pitch or other
> anomaly)
> > >
> > > I did return to factory defaults + ran calibration: no effect.
> > >
> > > Then I put it in "show voices played" mode, and the faulty voice always
> shows up at voice number 2.
> > >
> > > Any idea if this means I can have one of the CEM chips in it replaced?
> > > Anyone with similar experiences?
> > >
> > > grateful for any help or tip
> > >
> > > regards
> > > HÃ¥kon
> > >
> >
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.